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"""Default formatting class for Flake8."""
from flake8.formatting import base
class SimpleFormatter(base.BaseFormatter):
"""Simple abstraction for Default and Pylint formatter commonality.
Sub-classes of this need to define an ``error_format`` attribute in order
to succeed. The ``format`` method relies on that attribute and expects the
``error_format`` string to use the old-style formatting strings with named
parameters:
* code
* text
* path
* row
* col
"""
error_format = None
def format(self, error):
"""Format and write error out.
If an output filename is specified, write formatted errors to that
file. Otherwise, print the formatted error to standard out.
"""
return self.error_format % {
"code": error.code,
"text": error.text,
"path": error.filename,
"row": error.line_number,
"col": error.column_number,
}
class Default(SimpleFormatter):
"""Default formatter for Flake8.
This also handles backwards compatibility for people specifying a custom
format string.
"""
error_format = '%(path)s:%(row)d:%(col)d: %(code)s %(text)s'
def after_init(self):
"""Check for a custom format string."""
if self.options.format.lower() != 'default':
self.error_format = self.options.format
class Pylint(SimpleFormatter):
"""Pylint formatter for Flake8."""
error_format = '%(path)s:%(row)d: [%(code)s] %(text)s'
class FilenameOnly(SimpleFormatter):
"""Only print filenames, e.g., flake8 -q."""
error_format = '%(path)s'
def after_init(self):
"""Initialize our set of filenames."""
self.filenames_already_printed = set()
def format(self, error):
"""Ensure we only print each error once."""
if error.filename not in self.filenames_already_printed:
self.filenames_already_printed.add(error.filename)
return super(FilenameOnly, self).format(error)
class Nothing(base.BaseFormatter):
"""Print absolutely nothing."""
def format(self, error):
"""Do nothing."""
pass
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